“Tvären”的意思、由来-开放百科全书

词条

Tvären

释义

References

Tvären is a circular bay close to Studsvik, Sweden. The bay lies above an ancient buried impact crater about 2 km in diameter. The crater is estimated to be about 455 million years old (Late Ordovician).^[1]

Asteroid 7771 Tvären is named after the bay.

References

1. ^{{cite Earth Impact DB | name = Tvären|linkname = tvaren| accessdate = 2009-08-20}}

{{coord|58|46|N|17|25|E|scale:100000|display=title}}{{Impact cratering on Earth}}{{DEFAULTSORT:Tvaren}}{{Södermanland-geo-stub}}

3 : Impact craters of Sweden|Ordovician impact craters|Landforms of Södermanland County

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